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#ifndef CYGONCE_HAL_ARM_STUB_H #define CYGONCE_HAL_ARM_STUB_H //======================================================================== // // arm_stub.h // // ARM-specific definitions for generic stub // //======================================================================== //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos is free software; you can redistribute it and/or modify it under // the terms of the GNU General Public License as published by the Free // Software Foundation; either version 2 or (at your option) any later version. // // eCos is distributed in the hope that it will be useful, but WITHOUT ANY // WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with eCos; if not, write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. // // As a special exception, if other files instantiate templates or use macros // or inline functions from this file, or you compile this file and link it // with other works to produce a work based on this file, this file does not // by itself cause the resulting work to be covered by the GNU General Public // License. However the source code for this file must still be made available // in accordance with section (3) of the GNU General Public License. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //======================================================================== //#####DESCRIPTIONBEGIN#### // // Author(s): Red Hat, gthomas // Contributors: Red Hat, gthomas // Date: 1998-11-26 // Purpose: // Description: ARM-specific definitions for generic stub // Usage: // //####DESCRIPTIONEND#### // //======================================================================== #ifdef __cplusplus extern "C" { #endif // The ARM has float (and possibly other coprocessor) registers that are // larger than it can hold in a target_register_t. #define TARGET_HAS_LARGE_REGISTERS // ARM stub has special needs for register handling (not all regs are the // the same size), so special put_register and get_register are provided. #define CYGARC_STUB_REGISTER_ACCESS_DEFINED 1 #define NUMREGS (16+8+2) // 16 GPR, 8 FPR (unused), 2 PS #define REGSIZE( _x_ ) (((_x_) < F0 || (_x_) >= FPS) ? 4 : 12) // Comment out to allow for default gdb stub packet buffer which is larger. // #define NUMREGBYTES ((16*4)+(8*12)+(2*4)) #ifndef TARGET_REGISTER_T_DEFINED #define TARGET_REGISTER_T_DEFINED typedef unsigned long target_register_t; #endif enum regnames { R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, FP, IP, SP, LR, PC, F0, F1, F2, F3, F4, F5, F6, F7, FPS, PS }; #define HAL_STUB_REGISTERS_SIZE \ ((sizeof(GDB_Registers) + sizeof(target_register_t) - 1) / sizeof(target_register_t)) #define PS_N 0x80000000 #define PS_Z 0x40000000 #define PS_C 0x20000000 #define PS_V 0x10000000 #define PS_I CPSR_IRQ_DISABLE #define PS_F CPSR_FIQ_DISABLE typedef enum regnames regnames_t; /* Given a trap value TRAP, return the corresponding signal. */ extern int __computeSignal (unsigned int trap_number); /* Return the SPARC trap number corresponding to the last-taken trap. */ extern int __get_trap_number (void); /* Return the currently-saved value corresponding to register REG. */ extern target_register_t get_register (regnames_t reg); /* Store VALUE in the register corresponding to WHICH. */ extern void put_register (regnames_t which, target_register_t value); /* Set the currently-saved pc register value to PC. This also updates NPC as needed. */ extern void set_pc (target_register_t pc); /* Set things up so that the next user resume will execute one instruction. This may be done by setting breakpoints or setting a single step flag in the saved user registers, for example. */ void __single_step (void); /* Clear the single-step state. */ void __clear_single_step (void); /* If the breakpoint we hit is in the breakpoint() instruction, return a non-zero value. */ extern int __is_breakpoint_function (void); /* Skip the current instruction. */ extern void __skipinst (void); extern void __install_breakpoints (void); extern void __clear_breakpoints (void); extern int __is_bsp_syscall(void); //------------------------------------------------------------------------ // Special definition of CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION #ifdef CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT // we can only do this at all if break support is enabled: #ifdef __thumb__ // If this macro is used from Thumb code, we need to pass this information // along to the place_break function so it can do the right thing. #define CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION( _old_ ) \ do { \ HAL_DISABLE_INTERRUPTS(_old_); \ cyg_hal_gdb_place_break((target_register_t)((unsigned long)&&cyg_hal_gdb_break_place + 1));\ } while ( 0 ) #else #define CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION( _old_ ) \ do { \ HAL_DISABLE_INTERRUPTS(_old_); \ cyg_hal_gdb_place_break((target_register_t)&&cyg_hal_gdb_break_place ); \ } while ( 0 ) #endif // __thumb_ // Also define ..LEAVE.. with a trick to *use* the label - sometimes the // tools want to move the label, which is bad. #define CYG_HAL_GDB_LEAVE_CRITICAL_IO_REGION( _old_ ) \ do { \ cyg_hal_gdb_remove_break( (target_register_t)&&cyg_hal_gdb_break_place ); \ HAL_RESTORE_INTERRUPTS(_old_); \ _old_ = 1; /* actually use the label as a label... */ \ cyg_hal_gdb_break_place: \ if ( (_old_)-- > 0 ) /* ...or the compiler might move it! */ \ goto cyg_hal_gdb_break_place; \ } while ( 0 ) #endif // CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT #ifdef __cplusplus } /* extern "C" */ #endif #endif // ifndef CYGONCE_HAL_ARM_STUB_H